I'm getting lots and lots of System.ComponentModel.Win32Exception
, Data.SqlClient.SqlException
in my production CM sitecore log. Some times when use content editor or experience editor this error is coming in the browser also. After a refresh I am able to continue.
Sitecore 8.1 Update 2 SQL Azure Paas
Some of the log entries are.
7088 2016:11:24 11:45:09 ERROR Application error.
Exception: System.Data.SqlClient.SqlException
Message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - No such host is known.)
Source: .Net SqlClient Data Provider
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at Sitecore.Data.DataProviders.Sql.DataProviderCommand..ctor(IDbCommand command, DataProviderTransaction transaction, Boolean openConnection)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass4.<CreateCommand>b__3()
at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func`1 action, Action recover)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass12.<CreateReader>b__10()
at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func`1 action, Action recover)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.CreateReader(String sql, Object[] parameters)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.GetChildIdsByName(String childName, ID parentId)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.DataProvider.ResolvePath(String itemPath, CallContext context, DataProviderCollection providers)
at Sitecore.Nexus.Data.DataCommands.ResolvePathCommand.Execute(String , Database )
at Sitecore.Data.Engines.EngineCommand`2.Execute()
at Sitecore.Data.Managers.ItemProvider.GetItem(String itemPath, Language language, Version version, Database database, SecurityCheck securityCheck)
at Sitecore.ContentTesting.Pipelines.ItemProvider.GetItem.GetItemUnderTestProcessor.Process(GetItemArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Data.Managers.PipelineBasedItemProvider.ExecuteAndReturnResult[TArgs,TResult](String pipelineName, String pipelineDomain, Func`1 pipelineArgsCreator, Func`1 fallbackResult)
at Sitecore.Data.Managers.ItemManager.GetItem(String itemPath, Language language, Version version, Database database, SecurityCheck securityCheck)
at Sitecore.Data.AliasResolver.get_Item(String alias)
at Sitecore.Pipelines.HttpRequest.AliasResolver.Process(HttpRequestArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Nexus.Web.HttpModule.(Object , EventArgs )
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Nested Exception
Exception: System.ComponentModel.Win32Exception
Message: No such host is known
Another One is
12404 2016:11:24 11:41:53 ERROR Application error.
Exception: System.Data.SqlClient.SqlException
Message: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)
Source: .Net SqlClient Data Provider
at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling)
at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.Open()
at Sitecore.Data.DataProviders.Sql.DataProviderCommand..ctor(IDbCommand command, DataProviderTransaction transaction, Boolean openConnection)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass4.<CreateCommand>b__3()
at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func`1 action, Action recover)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.<>c__DisplayClass12.<CreateReader>b__10()
at Sitecore.Data.DataProviders.NullRetryer.Execute[T](Func`1 action, Action recover)
at Sitecore.Data.DataProviders.Sql.SqlDataApi.CreateReader(String sql, Object[] parameters)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.GetChildIdsByName(String childName, ID parentId)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.Sql.SqlDataProvider.ResolvePathRec(String[] path, PathCache cache, CallContext context)
at Sitecore.Data.DataProviders.DataProvider.ResolvePath(String itemPath, CallContext context, DataProviderCollection providers)
at Sitecore.Nexus.Data.DataCommands.ResolvePathCommand.Execute(String , Database )
at Sitecore.Data.Engines.EngineCommand`2.Execute()
at Sitecore.Data.Managers.ItemProvider.GetItem(String itemPath, Language language, Version version, Database database, SecurityCheck securityCheck)
at Sitecore.ContentTesting.Pipelines.ItemProvider.GetItem.GetItemUnderTestProcessor.Process(GetItemArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Data.Managers.PipelineBasedItemProvider.ExecuteAndReturnResult[TArgs,TResult](String pipelineName, String pipelineDomain, Func`1 pipelineArgsCreator, Func`1 fallbackResult)
at Sitecore.Data.Managers.ItemManager.GetItem(String itemPath, Language language, Version version, Database database, SecurityCheck securityCheck)
at Sitecore.Data.AliasResolver.get_Item(String alias)
at Sitecore.Pipelines.HttpRequest.AliasResolver.Process(HttpRequestArgs args)
at (Object , Object[] )
at Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args)
at Sitecore.Nexus.Web.HttpModule.(Object , EventArgs )
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Nested Exception
Exception: System.ComponentModel.Win32Exception
Message: The network path was not found
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on for SQL Azure